No open health-based violations on EPA record in the last 10 years.
Serves about 248,000 people (46,952 connections) with groundwater from its own wells, and buys water from Suburban Water Systems-San Jose, Valley County Water Dist., City of Arcadia and 4 more.
From EPA's record for CA1910039. PurityMap is independent of San Gabriel Valley Water Co.-El Monte.
Are you this utility? Correct this listing →
2 health-based violations in the last 10 years, from EPA's SDWIS compliance database.
| Period | Contaminant | Measured | Legal limit | EPA status |
|---|---|---|---|---|
| From June 2019 | Groundwater Rule | – | – | Resolved |
| From September 2018 | Groundwater Rule | – | – | Resolved |
EPA required this system to test for 30 unregulated and emerging contaminants, in February 2025.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorobutanoic acid (PFBA) | 10 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoropentanoic acid (PFPeA) | 5.6 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-02-28 | UCMR5 Analytical Results: SAN GABRIEL VALLEY WATER CO.-EL MONTE (CA1910039) |
Screening tells you if something is worth a closer look; a lab result is the number you can act on.
As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure
Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 2–4 business days after the lab receives it
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
Get PurityMap updates about this water system.
Follow this water →San Gabriel Valley Water Co.-El Monte's phone number on EPA record is 626-448-6183. Its mailing address is P.O.BOX 6010, EL MONTE, CA 91734-2010.
According to EPA's record, San Gabriel Valley Water Co.-El Monte uses groundwater from its own wells, and buys water from Suburban Water Systems-San Jose, Valley County Water Dist., City of Arcadia and 4 more.
EPA's record shows 2 health-based violations for San Gabriel Valley Water Co.-El Monte in the 10 years to July 9, 2026. No open health-based violations on EPA record in the last 10 years. The record comes from EPA's SDWIS compliance database.
Lead was not detected at the 90th percentile of tap samples in San Gabriel Valley Water Co.-El Monte's latest lead and copper round, which ended in December 2023. The federal action level is 15 µg/L.
PurityMap has no verified website for San Gabriel Valley Water Co.-El Monte. Its phone number on EPA record is 626-448-6183. Its mailing address on EPA record is P.O.BOX 6010, EL MONTE, CA 91734-2010. Your water bill lists the ways to contact your supplier and pay. PurityMap does not take payments.